you saw arnold schwarzenegger you know, talking about that. and he's crazy by the way for even doing this. but powerful men pretty much do what they want and that's -- john kennedy was very, very powerful and he wanted to do these things and he did. we write about them in the context of how they influenced how he ran a country. because they did. there was so much of it. but then there was a turning point, the death of his baby, patrick. and i write about that extensively, and that turned kennedy and changed him. >> quickly before i let you go that epic debate with you and john stewart, what are you doing to prepare? >> taking a nap. it's going to be a lot of fun but i want people to know it's for charity. you go to the rumble 2012.com, you can see it, 5 bucks, and there he s. he is terrified by the way. look. you can see it. you know, we're doing this, stewart is a good man. we're going to raise a lot for charity. >> bill o'reilly, thank you so much. "killing kennedy." you can watch the first presidential debate tomorrow 9:00 eastern, 6:00 pac